As for the hip-hop slang, rubber bands often appears in the expression poppin' rubber bands, or earning/spending a lot of money or feeling classy, sexy, and successful more generally.

What does poppin mean slang?

When used as an adjective, poppin' is a synonym for awesome, popular, or fresh, especially prominent in US black slang.

What does it mean when someone wears a rubber band on their wrist?

For many years people have used a rubber band placed around their wrist to help them successfully break bad habits and therefore make a change to their life. The 'science' is simple conditioning. Catch yourself 'doing' the behaviour that you want to stop. ... It's a little bit like Pavlov's dog in reverse.